I'm from the hometown of where SkyBlue is from so I've been following them for some time now. My deluxe pen went for 2 years and I only needed a replacement because I lost it on a camping trip.
great multi use pen, would highly recommend to everyone!
I see most of the reviews here are for how it works with pre-filled carts but not many for the refillable cart that comes with it...
I can get 3-5 uses out of it before I order a new one from these guys. I'm still saving money by refilling and the taste is always there.
Would recommend using their carts even if you have your own pen already. These guys only bring out great products.